Moira Buxbaum was exiting her 2009 BMW, which was parked on the western edge of Los Cerros Drive, just south of Almenar Drive, when a southbound 1993 Volvo swerved to the right and hit Buxbaum and her car just before 6 p.m., CHP Officer Sean Poore said.
The collision sent the 56-year-old woman onto the hood of the Volvo and severely injured her right foot, he said. She was taken to Marin General Hospital for treatment.
The driver of the Volvo, a 16-year-old Greenbrae boy, told CHP investigators that he had he been momentarily distracted just before he swerved.
Alcohol is not believed to be a factor in the crash, Poore said.
The accident is under investigation by the CHP.